Project Sekai Adds Eien Hanahadashii as New Rhythm Game Song
Project Sekai: Colorful Stage! feat. Hatsune Miku added the song Eien Hanahadashii on June 12, 2026. The track, composed by Shishi Shishi, is available in two versions: a Sekai version sung by Megurine Luka and Vivid BAD SQUAD, and a Virtual Singer version sung by Hatsune Miku. A 3DMV for the song also released on the official YouTube channel.